2131241099 has 4 divisors (see below), whose sum is σ = 2295182736. Its totient is φ = 1967299464.

The previous prime is 2131241089. The next prime is 2131241113. The reversal of 2131241099 is 9901421312.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2131241099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131241069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81970799 + ... + 81970824.

It is an arithmetic number, because the mean of its divisors is an integer number (573795684).

Almost surely, 2^2131241099 is an apocalyptic number.

2131241099 is a deficient number, since it is larger than the sum of its proper divisors (163941637).

2131241099 is a wasteful number, since it uses less digits than its factorization.

2131241099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163941636.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2131241099 is about 46165.3668782129. The cubic root of 2131241099 is about 1286.8982022304.

The spelling of 2131241099 in words is "two billion, one hundred thirty-one million, two hundred forty-one thousand, ninety-nine".